.div1 {
    position: relative;
    width: 1080px;
    height: 2400px;
}


.v1 {
    position: absolute;
    width: 100%;
}

.span1 {
    position: absolute;
    top: 670px;
    left: 81px;
    font-size: 38px;
    font-weight: 400;
    color: #000000;
    line-height: 60px;
}

.button_1v {
    position: absolute;
    height: 180px;
    background: url('../image/btn_back_bg.png') 0px 0px no-repeat;
    width: 1080px;
    margin-top: 1800px;
}

.text_2v {
    width: 94px;
    height: 46px;
    overflow-wrap: break-word;
    color: rgba(255, 255, 255, 1);
    font-size: 48px;
    font-family: MicrosoftYaHei;
    font-weight: NaN;
    text-align: center;
    white-space: nowrap;
    line-height: 60px;
    margin: 68px 0 0 480px;
}

.flex-col {
    display: flex;
    flex-direction: column;
}